{% load static %}
{# PICK SKY overlay — natal chart entry + D3 wheel preview           #}
{# Included in room.html when table_status == "SKY_SELECT"           #}
{# Opens when user clicks #id_pick_sky_btn; html.natus-open controls #}
{# visibility via CSS — backdrop-filter blur + centred modal.        #}

<div class="natus-backdrop"></div>
<div class="natus-overlay"
     id="id_natus_overlay"
     data-preview-url="{% url 'epic:natus_preview' room.id %}"
     data-save-url="{% url 'epic:natus_save' room.id %}">

    <div class="natus-modal">

        <header class="natus-modal-header">
            <h2>PICK <span>SKY</span></h2>
            <p>Enter your birth details to generate your natal chart.</p>
        </header>

        <div class="natus-modal-body">

            {# ── Form column ──────────────────────────────────────── #}
            <div class="natus-form-col">
                <form id="id_natus_form" autocomplete="off">

                    <div class="natus-field">
                        <label for="id_nf_date">Birth date</label>
                        <input id="id_nf_date" name="date" type="date" required>
                    </div>

                    <div class="natus-field">
                        <label for="id_nf_time">Birth time</label>
                        <input id="id_nf_time" name="time" type="time" value="12:00">
                        <small>Local time at birth place. Use 12:00 if unknown.</small>
                    </div>

                    <div class="natus-field natus-place-field">
                        <label for="id_nf_place">Birth place</label>
                        <div class="natus-place-wrap">
                            <input id="id_nf_place" name="place" type="text"
                                   placeholder="Start typing a city…"
                                   autocomplete="off">
                            <button type="button" id="id_nf_geolocate"
                                    class="btn btn-secondary btn-sm"
                                    title="Use device location">
                                <i class="fa-solid fa-location-crosshairs"></i>
                            </button>
                        </div>
                        <div id="id_nf_suggestions" class="natus-suggestions" hidden></div>
                    </div>

                    <div class="natus-field natus-coords">
                        <div>
                            <label>Latitude</label>
                            <input id="id_nf_lat" name="lat" type="text"
                                   placeholder="—" readonly tabindex="-1">
                        </div>
                        <div>
                            <label>Longitude</label>
                            <input id="id_nf_lon" name="lon" type="text"
                                   placeholder="—" readonly tabindex="-1">
                        </div>
                    </div>

                    <div class="natus-field">
                        <label for="id_nf_tz">Timezone</label>
                        <input id="id_nf_tz" name="tz" type="text"
                               placeholder="auto-detected from location">
                        <small id="id_nf_tz_hint"></small>
                    </div>

                </form>

                <div id="id_natus_status" class="natus-status"></div>
            </div>

            {# ── Wheel column ─────────────────────────────────────── #}
            <div class="natus-wheel-col">
                <svg id="id_natus_svg" class="natus-svg"></svg>
            </div>

        </div>{# /.natus-modal-body #}

        <footer class="natus-modal-footer">
            <button type="button" id="id_natus_cancel" class="btn btn-cancel">NVM</button>
            <button type="button" id="id_natus_confirm" class="btn btn-primary" disabled>
                Save Sky
            </button>
        </footer>

    </div>{# /.natus-modal #}
</div>{# /.natus-overlay #}

<script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
<script src="{% static 'apps/gameboard/natus-wheel.js' %}"></script>
<script>
(function () {
  'use strict';

  const overlay      = document.getElementById('id_natus_overlay');
  const form         = document.getElementById('id_natus_form');
  const svgEl        = document.getElementById('id_natus_svg');
  const statusEl     = document.getElementById('id_natus_status');
  const confirmBtn   = document.getElementById('id_natus_confirm');
  const cancelBtn    = document.getElementById('id_natus_cancel');
  const geoBtn       = document.getElementById('id_nf_geolocate');
  const placeInput   = document.getElementById('id_nf_place');
  const latInput     = document.getElementById('id_nf_lat');
  const lonInput     = document.getElementById('id_nf_lon');
  const tzInput      = document.getElementById('id_nf_tz');
  const tzHint       = document.getElementById('id_nf_tz_hint');
  const suggestions  = document.getElementById('id_nf_suggestions');

  const PREVIEW_URL  = overlay.dataset.previewUrl;
  const SAVE_URL     = overlay.dataset.saveUrl;
  const NOMINATIM    = 'https://nominatim.openstreetmap.org/search';
  const USER_AGENT   = 'EarthmanRPG/1.0 (https://earthmanrpg.me)';

  let _lastChartData  = null;
  let _placeDebounce  = null;
  let _chartDebounce  = null;
  const PLACE_DELAY   = 400;   // ms — Nominatim polite rate
  const CHART_DELAY   = 300;   // ms — chart preview debounce

  // ── Open / Close ──────────────────────────────────────────────────────────

  function openNatus() {
    document.documentElement.classList.add('natus-open');
  }

  function closeNatus() {
    document.documentElement.classList.remove('natus-open');
    hideSuggestions();
  }

  const pickSkyBtn = document.getElementById('id_pick_sky_btn');
  if (pickSkyBtn) pickSkyBtn.addEventListener('click', openNatus);
  cancelBtn.addEventListener('click', closeNatus);
  overlay.addEventListener('click', (e) => { if (e.target === overlay) closeNatus(); });

  // ── Status helper ─────────────────────────────────────────────────────────

  function setStatus(msg, type) {
    statusEl.textContent = msg;
    statusEl.className = 'natus-status' + (type ? ` natus-status--${type}` : '');
  }

  // ── Nominatim place search ────────────────────────────────────────────────

  placeInput.addEventListener('input', () => {
    clearTimeout(_placeDebounce);
    const q = placeInput.value.trim();
    if (q.length < 3) { hideSuggestions(); return; }
    _placeDebounce = setTimeout(() => fetchPlaces(q), PLACE_DELAY);
  });

  placeInput.addEventListener('keydown', (e) => {
    if (e.key === 'Escape') hideSuggestions();
  });

  document.addEventListener('click', (e) => {
    if (!placeInput.contains(e.target) && !suggestions.contains(e.target)) {
      hideSuggestions();
    }
  });

  function fetchPlaces(query) {
    fetch(`${NOMINATIM}?format=json&q=${encodeURIComponent(query)}&limit=6`, {
      headers: { 'User-Agent': USER_AGENT },
    })
      .then(r => r.json())
      .then(results => {
        if (!results.length) { hideSuggestions(); return; }
        renderSuggestions(results);
      })
      .catch(() => hideSuggestions());
  }

  function renderSuggestions(results) {
    suggestions.innerHTML = '';
    results.forEach(place => {
      const item = document.createElement('button');
      item.type = 'button';
      item.className = 'natus-suggestion-item';
      item.textContent = place.display_name;
      item.addEventListener('click', () => selectPlace(place));
      suggestions.appendChild(item);
    });
    suggestions.hidden = false;
  }

  function hideSuggestions() {
    suggestions.hidden = true;
    suggestions.innerHTML = '';
  }

  function selectPlace(place) {
    placeInput.value = place.display_name;
    latInput.value   = parseFloat(place.lat).toFixed(4);
    lonInput.value   = parseFloat(place.lon).toFixed(4);
    hideSuggestions();
    schedulePreview();
  }

  // ── Geolocation ───────────────────────────────────────────────────────────

  geoBtn.addEventListener('click', () => {
    if (!navigator.geolocation) {
      setStatus('Geolocation not supported by this browser.', 'error');
      return;
    }
    setStatus('Requesting device location…');
    navigator.geolocation.getCurrentPosition(
      (pos) => {
        latInput.value = pos.coords.latitude.toFixed(4);
        lonInput.value = pos.coords.longitude.toFixed(4);
        fetch(`https://nominatim.openstreetmap.org/reverse?format=json&lat=${latInput.value}&lon=${lonInput.value}`, {
          headers: { 'User-Agent': USER_AGENT },
        })
          .then(r => r.json())
          .then(data => { placeInput.value = _cityName(data.address) || data.display_name || ''; })
          .catch(() => {});
        setStatus('');
        schedulePreview();
      },
      () => setStatus('Location access denied.', 'error'),
    );
  });

  // Build a "City, State, Country" string from a Nominatim address object.
  // Prefers the most specific incorporated place name available.
  function _cityName(addr) {
    if (!addr) return '';
    const city    = addr.city || addr.town || addr.village || addr.hamlet || addr.municipality || '';
    const region  = addr.state || addr.county || addr.state_district || '';
    const country = addr.country || '';
    return [city, region, country].filter(Boolean).join(', ');
  }

  // ── Debounced chart preview ───────────────────────────────────────────────

  // Trigger on date / time / tz changes (coords come via selectPlace / geolocation)
  form.addEventListener('input', (e) => {
    if (e.target === placeInput) return;   // place triggers via selectPlace
    clearTimeout(_chartDebounce);
    _chartDebounce = setTimeout(schedulePreview, CHART_DELAY);
  });

  function _formReady() {
    return document.getElementById('id_nf_date').value &&
           latInput.value && lonInput.value;
  }

  function schedulePreview() {
    if (!_formReady()) return;
    const date = document.getElementById('id_nf_date').value;
    const time = document.getElementById('id_nf_time').value || '12:00';
    const lat  = latInput.value;
    const lon  = lonInput.value;
    const tz   = tzInput.value.trim();   // optional — proxy resolves if blank

    const params = new URLSearchParams({ date, time, lat, lon });
    if (tz) params.set('tz', tz);

    setStatus('Calculating…');
    confirmBtn.disabled = true;

    fetch(`${PREVIEW_URL}?${params}`, { credentials: 'same-origin' })
      .then(r => {
        if (!r.ok) throw new Error(`HTTP ${r.status}`);
        return r.json();
      })
      .then(data => {
        _lastChartData = data;

        // Back-fill timezone field from proxy response (first render)
        if (!tzInput.value && data.timezone) {
          tzInput.value = data.timezone;
          tzHint.textContent = 'Auto-detected from coordinates.';
        }

        setStatus('');
        confirmBtn.disabled = false;
        if (svgEl.querySelector('*')) {
          NatusWheel.redraw(data);
        } else {
          NatusWheel.draw(svgEl, data);
        }
      })
      .catch(err => {
        setStatus(`Could not fetch chart: ${err.message}`, 'error');
        confirmBtn.disabled = true;
      });
  }

  // ── Save ──────────────────────────────────────────────────────────────────

  confirmBtn.addEventListener('click', () => {
    if (!_lastChartData) return;
    confirmBtn.disabled = true;
    setStatus('Saving…');

    const payload = {
      birth_dt:     `${document.getElementById('id_nf_date').value}T${document.getElementById('id_nf_time').value || '12:00'}:00`,
      birth_lat:    parseFloat(latInput.value),
      birth_lon:    parseFloat(lonInput.value),
      birth_place:  placeInput.value,
      house_system: _lastChartData.house_system || 'O',
      chart_data:   _lastChartData,
      action:       'confirm',
    };

    fetch(SAVE_URL, {
      method:      'POST',
      credentials: 'same-origin',
      headers: { 'Content-Type': 'application/json', 'X-CSRFToken': _getCsrf() },
      body: JSON.stringify(payload),
    })
      .then(r => {
        if (!r.ok) throw new Error(`HTTP ${r.status}`);
        return r.json();
      })
      .then(() => {
        setStatus('Sky saved!');
        setTimeout(closeNatus, 1200);
      })
      .catch(err => {
        setStatus(`Save failed: ${err.message}`, 'error');
        confirmBtn.disabled = false;
      });
  });

  // ── CSRF ──────────────────────────────────────────────────────────────────

  function _getCsrf() {
    const m = document.cookie.match(/csrftoken=([^;]+)/);
    return m ? m[1] : '';
  }
})();
</script>